How severe is CVE-2021-20574?

CVE-2021-20574 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-20574 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20574?

CVE-2021-20574 primarily affects Ibm Security Identity Manager Adapter. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-20574?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-20574 published?

CVE-2021-20574 was published on 2021-06-28 and last updated on 2026-06-17.

CVE-2021-20574

CVE-2021-20574 is a high-severity vulnerability in Ibm Security Identity Manager Adapter with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Ibm Security Identity Manager Adapter
Published: 2021-06-28
Last modified: 2026-06-17

Description

IBM Security Identity Manager Adapters 6.0 and 7.0 could allow a remote authenticated attacker to conduct an LDAP injection. By using a specially crafted request, an attacker could exploit this vulnerability and takeover other accounts. IBM X-Force ID: 199252.

Frequently asked questions

What is CVE-2021-20574?: IBM Security Identity Manager Adapters 6.0 and 7.0 could allow a remote authenticated attacker to conduct an LDAP injection. By using a specially crafted request, an attacker could exploit this vulnerability and takeover other accounts. IBM X-Force ID: 199252.
How severe is CVE-2021-20574?: CVE-2021-20574 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-20574 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20574?: CVE-2021-20574 primarily affects Ibm Security Identity Manager Adapter. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-20574?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-20574 published?: CVE-2021-20574 was published on 2021-06-28 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:security_identity_manager_adapter:6.0.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:security_identity_manager_adapter:7.0.0.0:*:*:*:*:*:*:*

More vulnerabilities in Ibm Security Identity Manager Adapter

CVE-2016-0340 — High (CVSS 7.4): IBM Security Identity Manager (ISIM) Virtual Appliance 7.0.0.0 through 7.0.1.1 before 7.0.1-ISS-SIM-FP0003 mishandles…
CVE-2016-0330 — High (CVSS 7.3): IBM Security Identity Manager (ISIM) Virtual Appliance 7.0.0.0 through 7.0.1.1 before 7.0.1-ISS-SIM-FP0003 mishandles…
CVE-2021-20573 — Medium (CVSS 6.5): IBM Security Identity Manager Adapters 6.0 and 7.0 are vulnerable to a heap-based buffer overflow, caused by improper…
CVE-2021-20572 — Medium (CVSS 6.5): IBM Security Identity Manager Adapters 6.0 and 7.0 are vulnerable to a stack-based buffer overflow, caused by improper…
CVE-2021-20494 — Medium (CVSS 6.5): IBM Security Identity Manager Adapters 6.0 and 7.0 are vulnerable to a heap based buffer overflow, caused by improper…
CVE-2016-0338 — Medium (CVSS 6.2): IBM Security Identity Manager (ISIM) Virtual Appliance 7.0.0.0 through 7.0.1.1 before 7.0.1-ISS-SIM-FP0003 allows local…

All CVEs affecting Ibm Security Identity Manager Adapter →

Other CWE-74 (Improper Neutralization of Special Elements (Injection)) vulnerabilities

CVE-2026-25586 — Critical (CVSS 10.0): SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, a sandbox escape is possible by shadowing hasOwnProperty…
CVE-2026-25520 — Critical (CVSS 10.0): SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, The return values of functions aren't wrapped.…
CVE-2025-20265 — Critical (CVSS 10.0): A vulnerability in the RADIUS subsystem implementation of Cisco Secure Firewall Management Center (FMC) Software could…
CVE-2025-20337 — Critical (CVSS 10.0): A vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to…
CVE-2025-20281 — Critical (CVSS 10.0): A vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to…
CVE-2024-42472 — Critical (CVSS 10.0): Flatpak is a Linux application sandboxing and distribution framework. Prior to versions 1.14.0 and 1.15.10, a malicious…

Browse all CWE-74 (Improper Neutralization of Special Elements (Injection)) vulnerabilities →